INTAKE MANIFOLD VACUUM INSPECTION [MZR 1.8, MZR 2.0, MZR 2.5]

id0113d0804200

1.   Verify that the intake air hoses are installed securely.

2.  Warm up the engine.

3.  Disconnect the vacuum hose connecting the intake manifold and the purge solenoid valve (purge solenoid valve side) and install the vacuum gauge. (See PURGE SOLENOID VALVE REMOVAL/INSTALLATION [MZR 1.8, MZR 2.0, MZR 2.5].)

4.  Measure the intake manifold vacuum while idling (no load) using the vacuum gauge.

•  If not within the specification, perform the following inspections.
―  Compression pressure (See COMPRESSION INSPECTION [MZR 1.8, MZR 2.0, MZR 2.5].)
―  Air suction
•  Installation areas of each vacuum hose
•  Installation areas of throttle body
•  Installation areas of fuel injector
•  Installation areas of PCV valve
•  Installation areas of intake manifold
Standard
Approx. –70 kPa {–525 mmHg, –21 inHg}